5 ideas
17832 | Zermelo showed that the ZF axioms in 1930 were non-categorical [Zermelo, by Hallett,M] |
13028 | Replacement was added when some advanced theorems seemed to need it [Zermelo, by Maddy] |
17626 | The antinomy of endless advance and of completion is resolved in well-ordered transfinite numbers [Zermelo] |
1556 | By nature people are close to one another, but culture drives them apart [Hippias] |
15998 | Perfect love is not in spite of imperfections; the imperfections must be loved as well [Kierkegaard] |